diff --git a/src/ce_dlang.pas b/src/ce_dlang.pas
index 3d403e08..570a51f9 100644
--- a/src/ce_dlang.pas
+++ b/src/ce_dlang.pas
@@ -723,6 +723,7 @@ var
   err: PLexError;
   tkIndex: NativeInt;
   pareCnt, curlCnt, squaCnt: NativeInt;
+  pareLeft, curlLeft, squaLeft: boolean;
 procedure addError(const aMsg: string);
 begin
   err := new(PLexError);
@@ -738,11 +739,12 @@ begin
   pareCnt := 0;
   curlCnt := 0;
   squaCnt := 0;
+  pareLeft:= False;
+  curlLeft:= False;
+  squaLeft:= False;
 
   for tk in aTokenList do
   begin
-
-    // token index
     Inc(tkIndex);
 
     // brackets count
@@ -758,12 +760,21 @@ begin
       end;
 
       // only for the first occurence
-      if pareCnt = -1 then
+      if not pareLeft then if pareCnt = -1 then
+      begin
         addError('a left parenthesis is missing');
-      if curlCnt = -1 then
+        pareLeft := true;
+      end;
+      if not curlLeft then if curlCnt = -1 then
+      begin
         addError('a left curly bracket is missing');
-      if squaCnt = -1 then
+        curlLeft := true;
+      end;
+      if not squaLeft then if squaCnt = -1 then
+      begin
         addError('a left square bracket is missing');
+        squaLeft := true;
+      end;
 
       // at the end
       if (tkIndex = aTokenList.Count-1) then
@@ -801,9 +812,9 @@ _preSeq:
         if old1.data = tk.data then
           addError('keyword is duplicated');
 
-      // needs negative numbr to be tokenized correctly: ... = -1; '-' is currently token as an operator.
-      if (old1.kind = ltkOperator) and (tk.kind = ltkOperator) then
-        addError('operator rhs cannot be an operator');
+      if tk.data <> '&' then // ident = &ident
+        if (old1.kind = ltkOperator) and (tk.kind = ltkOperator) then
+          addError('operator rhs cannot be an operator');
 
       if (old1.kind = ltkNumber) and (tk.kind = ltkNumber) then
         addError('symbol or operator expected after number');
diff --git a/src/ce_editor.pas b/src/ce_editor.pas
index 03d91322..26a6c2b0 100644
--- a/src/ce_editor.pas
+++ b/src/ce_editor.pas
@@ -23,9 +23,13 @@ type
   protected
     procedure UpdateByDelay; override;
   private
-    // http://bugs.freepascal.org/view.php?id=26329
     fKeyChanged: boolean;
+
+    // http://bugs.freepascal.org/view.php?id=26329
     fSyncEdit: TSynPluginSyncroEdit;
+
+    tokLst: TLexTokenList;
+    errLst: TLexErrorList;
     procedure memoKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
     procedure memoMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
     procedure memoChange(Sender: TObject);
@@ -37,6 +41,7 @@ type
     procedure identifierToD2Syn(const aMemo: TCESynMemo);
   public
     constructor create(aOwner: TComponent); override;
+    destructor destroy; override;
     procedure addEditor;
     procedure removeEditor(const aIndex: NativeInt);
     procedure focusedEditorChanged;
@@ -59,6 +64,10 @@ var
 begin
   inherited;
   fID := 'ID_EDIT';
+  //
+  tokLst := TLexTokenList.Create;
+  errLst := TLexErrorList.Create;
+  //
   fSyncEdit := TSynPluginSyncroEdit.Create(self);
   bmp := TBitmap.Create;
   try
@@ -70,6 +79,13 @@ begin
   DockMaster.GetAnchorSite(Self).Name := ID;
 end;
 
+destructor TCEEditorWidget.destroy;
+begin
+  tokLst.Free;
+  errLst.Free;
+  inherited;
+end;
+
 function TCEEditorWidget.getEditorCount: NativeInt;
 begin
   result := pageControl.PageCount;
@@ -197,8 +213,6 @@ const
   modstr: array[boolean] of string = ('...', 'MODIFIED');
 var
   ed: TCESynMemo;
-  tokLst: TLexTokenList;
-  errLst: TLexErrorList;
   err: TLexError;
 begin
   ed := getCurrentEditor;
@@ -213,24 +227,15 @@ begin
   begin
     mainForm.docChangeNotify(Self, editorIndex);
 
-    mainForm.MessageWidget.List.Clear;
-    tokLst := TLexTokenList.Create;
-    errLst := TLexErrorList.Create;
-    try
-      lex( ed.Lines.Text, tokLst );
-      checkSyntaxicErrors( tokLst, errLst);
-
-      for err in errLst do
-        mainForm.MessageWidget.addMessage(format(
-        '%s  (@line:%4.d @char:%.4d)',[err.msg, err.position.y, err.position.x]));
-
-      mainForm.MessageWidget.scrollToBack;
-
-    finally
-      tokLst.Free;
-      errLst.Free;
-    end;
-
+    mainForm.MessageWidget.Clear;
+    lex( ed.Lines.Text, tokLst );
+    checkSyntaxicErrors( tokLst, errLst);
+    for err in errLst do
+      mainForm.MessageWidget.addMessage(format(
+      '%s  (@line:%4.d @char:%.4d)',[err.msg, err.position.y, err.position.x]));
+    mainForm.MessageWidget.scrollToBack;
+    tokLst.Clear;
+    errLst.Clear;
 
   end;
   fKeyChanged := false;
diff --git a/src/ce_main.pas b/src/ce_main.pas
index 9c4e1a9e..450c623f 100644
--- a/src/ce_main.pas
+++ b/src/ce_main.pas
@@ -177,8 +177,6 @@ type
     procedure actProjSourceExecute(Sender: TObject);
     procedure actEdUnIndentExecute(Sender: TObject);
     procedure FormDropFiles(Sender: TObject; const FileNames: array of String);
-    procedure FormResize(Sender: TObject);
-    procedure FormShow(Sender: TObject);
   private
     fUpdateCount: NativeInt;
     fProject: TCEProject;
@@ -497,14 +495,6 @@ begin
   //
   srcLst.Clear;
 end;
-
-procedure TCEMainForm.FormShow(Sender: TObject);
-begin
-end;
-
-procedure TCEMainForm.FormResize(Sender: TObject);
-begin
-end;
 {$ENDREGION}
 
 {$REGION file ******************************************************************}
diff --git a/src/ce_messages.pas b/src/ce_messages.pas
index 92ed0208..ef0b6c0b 100644
--- a/src/ce_messages.pas
+++ b/src/ce_messages.pas
@@ -5,8 +5,8 @@ unit ce_messages;
 interface
 
 uses
-  Classes, SysUtils, Forms, Controls, Graphics, Dialogs,
-  ExtCtrls, ComCtrls, ce_widget, ActnList, Menus, clipbrd, AnchorDocking;
+  Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, ComCtrls,
+  ce_widget, ActnList, Menus, clipbrd, AnchorDocking, ce_project, ce_synmemo;
 
 type
 
@@ -19,6 +19,7 @@ type
     fActSaveMsg: TAction;
     fActCopyMsg: TAction;
     fActSelAll: TAction;
+    fProject: TCEProject;
     procedure actClearExecute(Sender: TObject);
     procedure actSaveMsgExecute(Sender: TObject);
     procedure actCopyMsgExecute(Sender: TObject);
@@ -35,6 +36,14 @@ type
     function contextName: string; override;
     function contextActionCount: integer; override;
     function contextAction(index: integer): TAction; override;
+    //
+    procedure projNew(const aProject: TCEProject); override;
+    procedure projClose(const aProject: TCEProject); override;
+    //
+    procedure docFocused(const aDoc: TCESynMemo); override;
+    procedure docClose(const aDoc: TCESynMemo); override;
+    //
+    procedure Clear;
   end;
 
   PTCEMessageItem = ^TCEMessageItem;
@@ -144,6 +153,33 @@ begin
   end;
 end;
 
+procedure TCEMessagesWidget.projNew(const aProject: TCEProject);
+begin
+  fProject := aProject;
+end;
+
+procedure TCEMessagesWidget.projClose(const aProject: TCEProject);
+begin
+  if fProject = aProject then
+    actClearExecute(nil);
+  fProject := nil;
+end;
+
+procedure TCEMessagesWidget.docFocused(const aDoc: TCESynMemo);
+begin
+  Clear;
+end;
+
+procedure TCEMessagesWidget.docClose(const aDoc: TCESynMemo);
+begin
+  Clear;
+end;
+
+procedure TCEMessagesWidget.Clear;
+begin
+  actClearExecute(nil);
+end;
+
 procedure TCEMessagesWidget.actClearExecute(Sender: TObject);
 begin
   List.Clear;
diff --git a/src/ce_projconf.pas b/src/ce_projconf.pas
index eb12b94a..39fef804 100644
--- a/src/ce_projconf.pas
+++ b/src/ce_projconf.pas
@@ -35,10 +35,10 @@ type
     procedure UpdateByEvent; override;
   public
     constructor create(aOwner: TComponent); override;
+    //
     procedure projNew(const aProject: TCEProject); override;
     procedure projChange(const aProject: TCEProject); override;
     procedure projClose(const aProject: TCEProject); override;
-    property project: TCEProject read fProj;
   end;
 
 implementation